New: CPU load one and repeating kernel warnings after underlying block device disappeared

Bug 36632 [email protected] 1 participant 2 messages Jun 4, 2011 – Dec 23, 2013

Share & tools

[email protected]

author

2011-06-04 10:40 UTC #0 lore raw

https://bugzilla.kernel.org/show_bug.cgi?id=36632

Summary: CPU load one and repeating kernel warnings after
underlying block device disappeared
Product: File System
Version: 2.5
Kernel Version: 2.6.38.7
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: ext4
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: No

This occurred while testing a storage target implementation and after having stopped the storage target. An ext4 filesystem had been created on top of the initiator device. After the target had been stopped, CPU load went up to one and stayed there. Killing the processes (via killall -9) that were using the filesystem was not possible.
Also, the following complaints appeared periodically in the system log:

kernel: sd 9:0:0:0: [sdc] Unhandled error code
kernel: sd 9:0:0:0: [sdc] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
kernel: sd 9:0:0:0: [sdc] CDB: Write(10): 2a 00 00 08 a0 58 00 00 08 00
kernel: end_request: I/O error, dev sdc, sector 565336
kernel: ------------[ cut here ]------------
kernel: WARNING: at fs/ext4/extents.c:3765 ext4_convert_unwritten_extents+0xf7/0x120 [ext4]()
kernel: Hardware name: P5Q DELUXE
kernel: Modules linked in: ext4 jbd2 crc16 ib_srp scsi_transport_srp scsi_tgt fuse ip6t_LOG ipt_MASQUERADE xt_pkttype xt_TCPMSS xt_tcpudp ipt_LOG xt_limit iptable_nat nf_nat radeon ttm drm_kms_helper drm i2c_algo_bit snd_pcm_os eq snd_seq_device vmnet vmblock vsock vmci vmmon af_packet rdma_ucm ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_raw xt_NOTRACK ipt_REJECT iptable_raw iptable_filter ip6table_mangle nf_conntrack_netbios_ns nf_conntrack ip_tables xt_conntrack nf_conntrack ip6table_filter ip6_tables x_tables ib_ipoib ib_uverbs ib_umad mlx4_ib cpufreq_conservative cpufreq_userspace cpufreq_powersave microcode acpi_cpufreq mperf dm_mod coretemp snd_hda_codec_hdmi
snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_timer joydev hid_belkin snd
i2c_i801 soundcore intel_agp sg snd_page_alloc mlx4_core i2c_core sr_mod intel_gtt pcspkr serio_raw cdrom asus_atk0110 button raid456 async_raid6_re id raid6_pq
kernel: async_xor xor async_memcpy async_tx raid10 raid0 uhci_hcd ehci_hcd rtc_cmos sd_mod rtc_core usbcore rtc_lib edd raid1 ext3 mbcache jbd fan ide_pci_generic ide_core ata_generic ata_piix pata_marvell ahci libahci libata t
mal_sys hwmon [last unloaded: ib_srp]

kernel: Pid: 9217, comm: kworker/0:1 Not tainted 2.6.38.7-scst #1
kernel: Call Trace:
kernel:  [<ffffffff8104c86f>] ? warn_slowpath_common+0x7f/0xc0
kernel:  [<ffffffff8104c8ca>] ? warn_slowpath_null+0x1a/0x20
kernel:  [<ffffffffa06640b7>] ? ext4_convert_unwritten_extents+0xf7/0x120
[ext4]
kernel:  [<ffffffff813c04e9>] ? trace_hardirqs_on_thunk+0x3a/0x3c
kernel:  [<ffffffffa064676a>] ? ext4_free_io_end+0xba/0xd0 [ext4]
kernel:  [<ffffffffa06467d0>] ? ext4_end_io_nolock+0x50/0x120 [ext4]
kernel:  [<ffffffffa06468df>] ? ext4_end_io_work+0x3f/0xb0 [ext4]
kernel:  [<ffffffffa06468a0>] ? ext4_end_io_work+0x0/0xb0 [ext4]
kernel:  [<ffffffff8106766b>] ? process_one_work+0x11b/0x490
kernel:  [<ffffffff8106914f>] ? worker_thread+0x16f/0x350
kernel:  [<ffffffff81068fe0>] ? worker_thread+0x0/0x350
kernel:  [<ffffffff8106d8d6>] ? kthread+0x96/0xa0
kernel:  [<ffffffff81003cd4>] ? kernel_thread_helper+0x4/0x10
kernel:  [<ffffffff8103d7b1>] ? finish_task_switch+0x51/0xb0
kernel:  [<ffffffff813c07ac>] ? _raw_spin_unlock_irq+0x1c/0x40
kernel:  [<ffffffff813c13f1>] ? restore_args+0x0/0x30
kernel:  [<ffffffff8106d840>] ? kthread+0x0/0xa0
kernel:  [<ffffffff81003cd0>] ? kernel_thread_helper+0x0/0x10
kernel: ---[ end trace f53df40954754bc1 ]---
kernel: ext4_convert_unwritten_extents: ext4_ext_map_blocks returned error

inode#27, block=329, max_blocks=1
kernel: EXT4-fs (sdc): previous I/O error to superblock detected
kernel: EXT4-fs error (device sdc): __ext4_get_inode_loc:4779: inode #27: block 97: comm kworker/0:1: unable to read itable block
kernel: EXT4-fs error (device sdc) in ext4_reserve_inode_write:5619: IO failure
kernel: EXT4-fs (sdc): previous I/O error to superblock detected
kernel: ext4_end_io_nolock: failed to convert unwritten extents to written extents, error is -5 io is still on inode 27 aio dio list

Signature · 3 lines

Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.

[email protected]

author

2013-12-23 13:42 UTC #1 lore raw

[Bug 36632] CPU load one and repeating kernel warnings after underlying block device disappeared

https://bugzilla.kernel.org/show_bug.cgi?id=36632

Alan <[email protected]> changed:

What |Removed |Added
----------------------------------------------------------------------------

             Status|NEW                         |RESOLVED
                 CC|                            |[email protected]
         Resolution|---                         |OBSOLETE

Signature · 2 lines

You are receiving this mail because:
You are watching the assignee of the bug.